7128265161 has 8 divisors (see below), whose sum is σ = 9508247424. Its totient is φ = 4750229840.

The previous prime is 7128265159. The next prime is 7128265201. The reversal of 7128265161 is 1615628217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7128265161 - 2¹ = 7128265159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7128265061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478170 + ... + 492851.

It is an arithmetic number, because the mean of its divisors is an integer number (1188530928).

Almost surely, 2^7128265161 is an apocalyptic number.

It is an amenable number.

7128265161 is a deficient number, since it is larger than the sum of its proper divisors (2379982263).

7128265161 is a wasteful number, since it uses less digits than its factorization.

7128265161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973471.

The product of its digits is 40320, while the sum is 39.

The square root of 7128265161 is about 84429.0540098608. The cubic root of 7128265161 is about 1924.5444617030.

The spelling of 7128265161 in words is "seven billion, one hundred twenty-eight million, two hundred sixty-five thousand, one hundred sixty-one".